Tool-wrench



W. H. BURSTALL.

TOOL WRENCH. APPLICATION FILED MAY 27. 1920.

Patented Mar. 1, 1921.

INVENTOR.

ATTOR Ey ATENT OFFICE.

WILLIAM H. BURSTALL; or extrema, CALIFORNIA, AssIc-Nort on ONE-HA1 T EUGENE J. nIEnnIon, on oxivann, CALIFORNIA. r

TOOL-WRENCH.

Specification of LettersPatent." Patented M n 1 1921.

Application filed May 2?, 1920. Serial No. 384,572.

' To all whom it may concern:

siding at Oxnard, in the county of Ventura.

and State of California, have invented a new and useful Tool-Wrench, of which the following is a specification,

a This invention relates to tool wrenches and is more particularly directed to tool wrenches adapted for use in connectingand disconnecting tools in wells and designed for use in connection with the standard type of oil welljacks.

The object of the invention is to provide a variable angle tool Wrench. I Another object is to provide. awrench having an operating handle which is capable of angular adjustment relative to the.

tool engaging throat.

Another object is to provide means by which the operating force applied to the handle is transmitted to the tool engaging member in opposite directions.

Another object is to provide a wrench in which the entire pull of the handle is transmitted to the free end of the tool engaging member.

Various other objects and advantages will be more fully apparent from the following description of the accompanying drawings, which form a part of this disclosure, and which illustrate a preferred form of embodiment of the invention.

Of the drawings: v

Figure 1 is a perspective view of a wrench embodying'the features of the invention.

Fig. 2 is a top plan view.

Fig. 3 is a side elevation.

Fig. 4 is a section on line ac -s0 of Fig. 2.

Fig. 5 is a plan view illustrating in full lines the usual types of wrench and the method of operation, and showing in dotted lines, the wrench of the present invention.

Wrenches of the general character herein referred to, are primarily used for the purpose of screwing together or unscrewing the threaded joints by which various types of well tools, rods and other elements of well drilling and operating equipment .are connected, and are ordinarily operated with one of the standard types of well jacks.

These tools have squared shank portions for engagement by the wrenches, the shank of one tool or rod being engaged by one wrench to keep said tool from turning and I the open end of said throat.

the shank of the adjacenttoolor, rod b'eing I engaged'by a secondwrench which is operated to screw up or unscrew the joint, one

Wrench being a left hand wrench and the other a right hand wrench.

In Fig. 5 I have shown the'ordinary type 1 of one .pieee wrench infuse, the wrench 1 engaging the'shank of the tool whichis to be kept from turning and the wrench 2 engaging the tool or rodtobe turned. [The wrenchl-is shown, engaging an abutment 3 on the circular ratchet track l of-a well jack and the wrench2 is shown engaged by the carriagee of the jack the carriage having an operating handle 6 which'operates-suitable mechanism within the carriage to proate the wrench 2. This is theordinary type of well jack and isnow so, well known in the, j

,alined whenthejoint is tight .or ust as the final tightening pressure. is "to be applied,

inwhich casethe two'wrenches will be relatively positioned approximately 90 apart, as illustrated in Fig. 5.

Under these conditions the movement of the-carriage 5 will be in the general direction indicated by the arrow 7, this direction .pelthecarriage along the track and oper-' being approximately parallel with the throat of the holding wrench 1 and toward Therefore. the holding wrench 1, while preventing a rotation of one tool part or rod, does not prevent a tilting of the string of tools by the force exerted by the jack carriage.

Further it will be pointed out, that the general line of force is directly between the carriage 5 and abutment 3, as indicated by the dotted line 8 and due to this, the result ing tendency will be for the track 4 to buckle outwardly as indicated bythe arrow 9.

With the wrench of the present invention the handle thereof may be positioned at various angles relative to the tool engaging throat, thereby eliminating the unfavorable conditions and results above outlined. With reference to Figs. 1 to 4:, the wrench as illustrated, comprises a bifurcated shank engaging body or jaw member 10 having a shank receiving throat 11, one end of the body he j ing pivotally connected at 12 to the operating handle 13; the opposed free end'having a rounded nose 14 adapted to engage into ban-- ment walls 25 either of which engages the either of three socket recesses of a tie link These recesses form a series of abutnose 14. Said tie linkhas a bifurcated inner end engaging over the handle 13 and is pivoted thereto at 17', the bridgemember being also provided with a handle-18 to facilitate manipulation thereof.

The body lO is provided with a bail 19 adapted to be engaged by suitable tackle to support the wrench While applying it to or removing it from the tools, if desired.

' By reference to Fig. 5. it will be seen that by engaging the tielink withthe free end of the body or jaw member, with the hose 14 engaged into the outer recess 15, the

handle 13 will be angled relative to the tool receiving'throat 11 to bring the handle closer to the handle of the holding wrench, and

thatby this relative positioning of the two wrenches, the force applied will more nearly be exerted longitudinally of. the track and transversely acrossthe open throat of the holding wrench instead of in a direction parallelt'o-said throat.

' gVith particular reference'to Fig. 2 it will be observed that when a. force is exerted on the handle in'the direction of arrow 20,this' force willjbedistributed to the pivots 12 and 17in opposite directionsa's' indicated by'ar- 7 rows 21 and 22. By the bridge member 16,

the pull of the handle is transmitted directly to the free end of the jaw member, the reverse forceapplied tothe pivot 17 cooperthe body.

much lighter structure for a given size wvrench than does the ordinary type of wrench. 7 i 7 it is to be understood that the wrench of the present invention may be made as right or left hand wrenches or that one form adapted for use as either could be designed without departing from the broad scope of the present invention. r

I cla11n 1. A tool wrench comprising a'rigid one piece body having a receiving throat, a

handle pivoted at one end to the body, and a link member pivoted o'nthe handle between itsends and" having a series of abutments adapted to singly engage tlie'free endiof 2. A tool wrench comprising a rigid one piece body having a handle pivoted atone end to the body, and

a link member pivoted on the handle intermediate its ends and provided witha series receiving throat, a

of recesses for engagement by the free end of the body.

Signed at, day of May, 1920; 1 V

. WILLIAM H. BURSTALL.

\Vitnesses: w r p HENRY C. DoWNEs, HELEN R. 'REEDY.

Oxnard, California, thisZOth 

